Regular expressions: number that does not begin or end with a letter

Hi

This is my first post here.

I'm trying to read a file that has strings like this one c0, ("cee zero comma") but it has other strings like 117. So I need to create a regular expression that only selects numbers that don't have any non numbers in front of them. Makes sense?

How can I select only the 0?

I have tried ^(?![\D][0-9]+ without success. I know this doesn't do anything at the end.

In simpler terms, what I'm trying to achieve is this: use regexp to only select decimal numbers and integers (but the interger part should not select integers that are in the decimal number...) .

Here is one of the lines I'm working on: d="M117.125,310.375c0,-77.729,80.738,-140.625,180.515,-140.625" />

Answer 1

[Debasish Samal]

Here is a solution to your answer. This solution separates all the decimal numbers/integers from the non integers/decimals.

str = "M117.125,310.375c0,-77.729,80.738,-140.625,180.515,-140.625" ;
exp1 = ',';
splitStr = regexp(str,exp1,"split");
exp3 = '[^0-9.,-]'
splitStr = regexprep(splitStr,exp3,'')

Output:

"117.125"	"310.3750"	"-77.729"	"80.738"	"-140.625"	"180.515"	"-140.625"

If this is what you needed, try the above regexp.

If you dont split the string at the commas you get this output.

splitStr = "117.125,310.3750,-77.729,80.738,-140.625,180.515,-140.625"

Answer 2

[L_Del]

Hi

Thank you for your prompt answer. This is almost perfect. I just changed the exp1 line into this:

exp1 = '(,|c)';

and now it takes the c character into account!

Again, many thanks for getting me unstuck!